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EN 1.8550 Steel vs. ASTM A387 Grade 11 Steel

Both EN 1.8550 steel and ASTM A387 grade 11 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is ASTM A387 grade 11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
25
Fatigue Strength, MPa 470
200 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 600
320 to 390
Tensile Strength: Ultimate (UTS), MPa 1000
500 to 600
Tensile Strength: Yield (Proof), MPa 760
270 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 440
430
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 40
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
2.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.6
Embodied Energy, MJ/kg 23
21
Embodied Water, L/kg 67
53

Common Calculations

PREN (Pitting Resistance) 2.3
3.1
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
100 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
200 to 320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
18 to 21
Strength to Weight: Bending, points 29
18 to 20
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 29
15 to 18

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0.050 to 0.17
Chromium (Cr), % 1.5 to 1.8
1.0 to 1.5
Iron (Fe), % 94.4 to 96.3
96.2 to 97.6
Manganese (Mn), % 0.4 to 0.7
0.4 to 0.65
Molybdenum (Mo), % 0.15 to 0.25
0.45 to 0.65
Nickel (Ni), % 0.85 to 1.2
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0.5 to 0.8
Sulfur (S), % 0 to 0.035
0 to 0.025